:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #666;
  --border: #e0e0e0;
  --accent: #0066cc;
  --accent-fg: #ffffff;
  --danger: #c0392b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1a1a;
    --fg: #e8e8e8;
    --muted: #999;
    --border: #333;
    --accent: #4da6ff;
    --accent-fg: #0a0a0a;
    --danger: #e74c3c;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--fg);
}

.login {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
}

form {
  width: min(100%, 24rem);
  display: grid;
  gap: 0.9rem;
}

img {
  justify-self: center;
}

h1 {
  margin: 0 0 0.25rem;
  text-align: center;
  font-size: 1.5rem;
  font-weight: 600;
}

label {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.9rem;
}

input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.65rem 0.7rem;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
}

button {
  border: 0;
  border-radius: 4px;
  padding: 0.65rem 1rem;
  background: var(--accent);
  color: var(--accent-fg);
  cursor: pointer;
  font: inherit;
  font-weight: 500;
}

.error {
  min-height: 1.5rem;
  margin: 0;
  color: var(--danger);
  font-size: 0.9rem;
  text-align: center;
}